Question

if d= -4 x = 7. an = 4 find a.​

Answer 1

Answer:

a=28

Step-by-step explanation:

d=(-4), An=4, n=7

an=a+(n-1)d

4=a+(7-1)(-4)

4=a+6(-4)

4=a+(-24)

4=a-24

a=4+24

a=28